sparc/build: Add SPARC target flags for compiling with clang

clang only supports building 64-bit kernel, so we use the
sparc64-linux-gnu target.

See also: https://lore.kernel.org/lkml/e26PTXUXEz8OYXmaeKn4Mpuejr4IOlFfFwdB5vpsluXlYiqDdlyQTYcDtdAny_o4gO4SfPeQCCN2qpyT6e0nog5EaP3xk2SeUPTrF54p1gM=@protonmail.com/T/#m068e010dcf8b99d3510a90d7532bcdb70e2e2c6b

Signed-off-by: Koakuma <koachan@protonmail.com>
Acked-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Link: https://lore.kernel.org/r/20241029-sparc-cflags-v3-2-b28745a6bd71@protonmail.com
Signed-off-by: Andreas Larsson <andreas@gaisler.com>

diff --git a/Documentation/kbuild/llvm.rst b/Documentation/kbuild/llvm.rst
index 6dc66b4f31a7bb62ba5bb6174730dc0a69ee0bba..bc8a283bc44bbfa9948ad3c9fe8031269ce10be4 100644 (file)
--- a/Documentation/kbuild/llvm.rst
+++ b/Documentation/kbuild/llvm.rst
@@ -179,6 +179,9 @@ yet. Bug reports are always welcome at the issue tracker below!
    * - s390
      - Maintained
      - ``LLVM=1`` (LLVM >= 18.1.0), ``CC=clang`` (LLVM < 18.1.0)
+   * - sparc (sparc64 only)
+     - Maintained
+     - ``CC=clang LLVM_IAS=0`` (LLVM >= 20)
    * - um (User Mode)
      - Maintained
      - ``LLVM=1``

diff --git a/scripts/Makefile.clang b/scripts/Makefile.clang
index 6c23c6af797fb016232914589c948208345417ad..2435efae67f53a26d55a1c0f1bf254a49d9fc731 100644 (file)
--- a/scripts/Makefile.clang
+++ b/scripts/Makefile.clang
@@ -10,6 +10,7 @@ CLANG_TARGET_FLAGS_mips               := mipsel-linux-gnu
 CLANG_TARGET_FLAGS_powerpc     := powerpc64le-linux-gnu
 CLANG_TARGET_FLAGS_riscv       := riscv64-linux-gnu
 CLANG_TARGET_FLAGS_s390                := s390x-linux-gnu
+CLANG_TARGET_FLAGS_sparc       := sparc64-linux-gnu
 CLANG_TARGET_FLAGS_x86         := x86_64-linux-gnu
 CLANG_TARGET_FLAGS_um          := $(CLANG_TARGET_FLAGS_$(SUBARCH))
 CLANG_TARGET_FLAGS             := $(CLANG_TARGET_FLAGS_$(SRCARCH))